Core TradesCâu 188 / 700
When the static water pressure supplied to a building exceeds what value, a pressure-reducing valve is generally required?
a.40 psi
b.60 psi
c.80 psi
d.120 psi
Giải thích
When static supply pressure exceeds 80 psi, a pressure-reducing valve must be installed to protect fixtures, appliances, and piping. 40 and 60 psi are within the normal usable range, and waiting until 120 psi would leave the system exposed to damaging high pressure.
Trích dẫn luật: 2025 CA Plumbing Code, Chapter 6 (Water Supply)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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